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Basics - Changing IP

posted Oct 7, 2012, 9:36 PM by Joe Bieber

To change the IP address of a networking adapter, you need to modify the /etc/network/interfaces file.
Open a terminal and use your favorite text editor to make your changes.
In a graphical desktop environment, like Ubuntu, Mint, Etc. you can right-click on the network icon on the panel and select "edit connections". 

sudo gedit /etc/network/interfaces
sudo pluma /etc/network/interfaces

In a non-gui server environment, I like to use 'nano'(It's easy) or you can use 'vim'(takes a bit to get used to).

sudo nano /etc/network/interfaces

sudo vi /etc/network/interfaces

auto eth0 
iface eth0 inet static 

Once you've saved your changes, you need to restart networking in order for your new settings to take effect.
Here's how:

sudo /etc/init.d/networking restart

Use ifconfig to confirm your settings have changed.

Basics - ifconfig

posted Oct 7, 2012, 9:29 PM by Joe Bieber

To display network settings in a terminal on Linux, use ifconfig, not to be confused with the Windows command ipconfig, which basically does the same thing in a Windows environment.



example result:
eth0    Link encap:Ethernet  HWaddr 01:0c:29:8d:44:06  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::20c:29ff:fe8d:4405/64 Scope:Link
          RX packets:17304 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9398 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:25263154 (24.0 MiB)  TX bytes:669213 (653.5 KiB)

A manual page for ifconfig for reference.

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